Annales de Paleontologie最新文献

{"title":"Cryptic fauna in nautiloid shells from the Ordovician of Estonia","authors":"Olev Vinn ,&nbsp;Oive Tinn ,&nbsp;Liisa Lang ,&nbsp;Mare Isakar ,&nbsp;Magdy El Hedeny ,&nbsp;Abdullah A. Alkahtane ,&nbsp;Saleh Alfarraj","doi":"10.1016/j.annpal.2025.102903","DOIUrl":"10.1016/j.annpal.2025.102903","url":null,"abstract":"<div><div>The Middle Ordovician cryptic encrusting community was numerically dominated by bryozoans (66.7%), followed by cornulitids (26.7%) and graptolites (6.6%). Bryozoans also occupied the largest encrustation area. Similarly, the Late Ordovician cryptic encrusting community was dominated by bryozoans (60%), while cornulitids (30%), brachiopods (8%), and graptolites (2%) formed a minor part of the community. In the studied samples, the disparity of Upper Ordovician cryptic encrusting fauna (including Bryozoa, Brachiopoda, Tentaculita, and Hemichordata) was greater than that of the Middle Ordovician, which consisted of Bryozoa, Hemichordata, and Tentaculita. There appears to be an increase in the maximum encrustation density within nautiloid shell interiors from the Darriwilian to the Katian. Additionally, a statistically significant increase in the percentage of encrusted nautiloid interiors from the Darriwilian to the Katian suggests a growing prevalence of cryptic encrusters over time. The increase was likely driven more by the evolutionary diversification of encrusting taxa than by the warming climate during the Katian in Baltica.</div></div>","PeriodicalId":50780,"journal":{"name":"Annales de Paleontologie","volume":"111 4","pages":"Article 102903"},"PeriodicalIF":0.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145486408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A chelonioid turtle with a long, upward curved, lower jaw beak, phosphates of Morocco, Paleocene-Eocene transition","authors":"France de Lapparent de Broin ,&nbsp;Xabier Murelaga ,&nbsp;Renaud Vacant","doi":"10.1016/j.annpal.2025.102901","DOIUrl":"10.1016/j.annpal.2025.102901","url":null,"abstract":"<div><div>The turtle <em>Marocokatognathus jimenezi</em> n. g., n. sp., known by a dentary, unique by its long, narrow and upward curved beak, is defined as Chelonioidea, not Dermochelyoidea. The morphology of the dentary indicates its skull had a secondary palate. By comparison with Chelonioid turtles, the variations of that structure are classified here in morphotypes, of practical taxonomical use and partly of phyletic incidence, notably as a Chelonioidea member. The new fossil is attributed to Cheloniidae and related to extant forms by: - its general dentary morphology including a Carettine shape of the bony triturating surface and the same relative proportions of distances between structural elements (posterior border of the symphysis, coronoid process, foramen mentale, in relation to corresponding skull structures); - the assignation to a same morphotype 1 of secondary palate, by an elongated snout for an elongated lower jaw, the choanal border anterior to palatine fossae, palate not developed beyond ca. two thirds of the snout length, correlatively preserving long dentary branches anteriorly and posteriorly to the coronoid process; - and overall by the posterior implantation of the mandibular ramphotheca on the mandibular symphysis with a medial symphyseal facet, specific of extant Cheloniidae. The possible diet and prey capture processes are examined, proposing a seizure of various prey of shape adapted to the narrow and long beak, followed immediately by their aspiration and swallowing. By its novelty, the new form emphasizes the great diversity of fossil turtles from Phosphates of Morocco, which are inventoried, as of the whole world.</div></div>","PeriodicalId":50780,"journal":{"name":"Annales de Paleontologie","volume":"111 4","pages":"Article 102901"},"PeriodicalIF":0.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145617999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First reliable fossil record of the family Isonychiidae (Insecta, Ephemeroptera) from Cretaceous Kachin amber","authors":"Zhi-Teng Chen ,&nbsp;Xuhongyi Zheng","doi":"10.1016/j.annpal.2025.102902","DOIUrl":"10.1016/j.annpal.2025.102902","url":null,"abstract":"<div><div>The mayfly family Isonychiidae is represented by the single extant genus <em>Isonychia</em> Eaton, 1871 and has long lacked a reliable fossil record, limiting insights into its evolutionary history. Here, we <em>describe Fujiwaranychia chiyokoae</em> gen. et sp. nov., a female imago preserved in mid-Cretaceous Kachin amber from northern Myanmar. This specimen represents the first reliable fossil evidence for Isonychiidae and confirms the family's presence in Laurasia during the Cretaceous. The new genus shares several morphological features with extant <em>Isonychia</em>, including forewing venation and a similar tarsal formula, but differs in the absence of cubital cross veins in forewings and the presence of an unforked media posterior vein in the hind wing. These differences justify its placement in a separate, extinct genus within Isonychiidae. The discovery extends the known history of the family by nearly 100 million years and reveals a previously unrecognized degree of morphological diversity. The fossil provides a critical calibration point for future phylogenetic studies and underscores the paleontological value of amber inclusions in tracing the evolutionary history of mayflies.</div></div>","PeriodicalId":50780,"journal":{"name":"Annales de Paleontologie","volume":"111 4","pages":"Article 102902"},"PeriodicalIF":0.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145486407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mecaster fourneli (Deshayes, 1847) (Echinodermata: Echinoidea) from the Turonian (Late Cretaceous) of the Gabonese Coastal Basin: systematics and palaeobiogeographical implications","authors":"Urlain Gaël Yakouya-Moubamba ,&nbsp;Thomas Saucède ,&nbsp;Wilma Linda-Belle Mougola ,&nbsp;Benjamin Musavu Moussavou","doi":"10.1016/j.annpal.2025.102888","DOIUrl":"10.1016/j.annpal.2025.102888","url":null,"abstract":"<div><div>This study presents a detailed systematic analysis of the irregular echinoid <em>Mecaster fourneli</em> (Deshayes, 1847) from Turonian (Late Cretaceous) deposits of the Gabonese coastal basin. The morphological and biometric study of 26 well-preserved specimens has allowed a precise characterisation of this species, previously mentioned but never described or illustrated in this region. The specimens studied come from three different localities (Gabon Store, Pétro Gabon and Maison Georges Rawiri). Comparative morpho-biometric analysis with populations from Algeria and Peru reveals a remarkable morphological homogeneity despite the geographical distance. The presence of <em>M</em>. <em>fourneli</em> in the Gabonese coastal basin confirms the geographical expansion of this species during the Upper Cretaceous and strengthens the hypothesis of a palaeobiogeographical link between the Mediterranean and West African provinces during the Turonian-Coniacian, probably via a trans-Saharan passage during the major transgressive event of this period.</div></div>","PeriodicalId":50780,"journal":{"name":"Annales de Paleontologie","volume":"111 3","pages":"Article 102888"},"PeriodicalIF":0.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145020963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New records of decapod crustaceans in the Jurassic of France","authors":"Sylvain Charbonnier ,&nbsp;Alessandro Garassino ,&nbsp;Thomas Laville ,&nbsp;Damien Gendry ,&nbsp;Philippe Courville ,&nbsp;Jean-Philippe Pezy ,&nbsp;Julien Devillez","doi":"10.1016/j.annpal.2025.102867","DOIUrl":"10.1016/j.annpal.2025.102867","url":null,"abstract":"<div><div>Decapod crustaceans (Crustacea, Decapoda) are particularly abundant and diverse in the Jurassic of France. Based on historical collections from French museums and universities, about 25 species belonging to six infraorders (Axiidea, Anomura, Brachyura, Glypheidea, Erymida, Achelata) are reported from the Sinemurian to the Kimmeridgian, among which three are new: <em>Palaeastacus ruteni</em> sp. nov. (Erymidae, Bathonian), <em>Stenodactylina souconnae</em> sp. nov. (Erymidae, Bajocian), and <em>Linuparus petrocorii</em> sp. nov. (Palinuridae, Kimmeridgian). These new occurrences enlarge the stratigraphic and palaeogeographic distributions of most of the studied species in all the main French sedimentary platforms and basins.</div></div>","PeriodicalId":50780,"journal":{"name":"Annales de Paleontologie","volume":"111 3","pages":"Article 102867"},"PeriodicalIF":0.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New data on Paleogene decapod crustaceans from Pakistan","authors":"Àlex Ossó ,&nbsp;Sylvain Charbonnier ,&nbsp;Alessandro Garassino ,&nbsp;Didier Merle ,&nbsp;Rafique Ahmed Lashari ,&nbsp;Annachiara Bartolini ,&nbsp;Grégoire Métais","doi":"10.1016/j.annpal.2025.102887","DOIUrl":"10.1016/j.annpal.2025.102887","url":null,"abstract":"<div><div>One hermit crab and two brachyuran crabs from the Eocene of Pakistan are described. The hermit crab, recovered from the middle Eocene of the Drazinda Formation in the Sulaiman Range (northern Pakistan), represents a new species of diogenid (Diogenidae): ?<em>Diogenes jafrii</em>. The two brachyuran crabs, recovered from two different localities of the Kirthar Range (southern Pakistan), have been identified as a portunid (Portunidae) and a possibly dromioid (Dromioidea), respectively, since the fragmentary condition does not allow a more specific systematic assignment. In addition, a specimen from the late Paleocene of the southern Kirthar Range, figured by Charbonnier et al. (2013), is re-examined herein.</div></div>","PeriodicalId":50780,"journal":{"name":"Annales de Paleontologie","volume":"111 3","pages":"Article 102887"},"PeriodicalIF":0.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Symbiosis in late Silurian (Ludfordian) bryozoans from Saaremaa Island, Estonia","authors":"Olev Vinn ,&nbsp;Andrej Ernst ,&nbsp;Oive Tinn ,&nbsp;Liisa Lang ,&nbsp;Mare Isakar ,&nbsp;Magdy El Hedeny ,&nbsp;Mansour I. Almansour ,&nbsp;Saleh Alfarraj","doi":"10.1016/j.annpal.2025.102869","DOIUrl":"10.1016/j.annpal.2025.102869","url":null,"abstract":"<div><div>Six new symbiotic associations between erect branching bryozoan colonies and tentaculitoid tubeworm-like organisms have been described from argillaceous carbonate rocks of the Ludfordian of Saaremaa Island, Estonia. Several symbiotic associations occur in the Kuressaare Formation: <em>Conchicolites</em> sp.– <em>Fistuli</em><em>pora</em> sp. A and <em>Fistulipora</em> sp. B, <em>Palaeoconchus</em> sp. – <em>Fistulipora</em> sp. A, <em>Conchicolites</em> sp. – ?<em>Eridotrypella</em> sp., <em>Conchicolites</em> sp.– ?<em>Anisotrypa proavus</em>, <em>Conchicolites</em> sp. –?<em>Leptotrypella versimilis</em> and <em>Monotrypa</em> sp. – unknown endozoobiont association. The colonization of bryozoans by cornulitids and microconchids likely occurred because the former provided a suitable hard substrate on an otherwise soft clay sea floor. Most cornulitids had endobiotic life modes and were completely intergrown with their host bryozoans. There is no evidence of how cornulitids might have provided some advantage to the bryozoan host. However, given the likelihood of feeding competition, these associations are more appropriately qualified as mildly parasitic.</div></div>","PeriodicalId":50780,"journal":{"name":"Annales de Paleontologie","volume":"111 3","pages":"Article 102869"},"PeriodicalIF":0.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revisiting Panthera leo sinhaleyus: Morphological insights and evolutionary implications from the holotype specimen from Sri Lanka","authors":"Kalangi Rodrigo ,&nbsp;Wijerathne Bohingamuwa","doi":"10.1016/j.annpal.2025.102872","DOIUrl":"10.1016/j.annpal.2025.102872","url":null,"abstract":"<div><div>The evolutionary history of lions (<em>Panthera leo</em>) reveals a dynamic trajectory shaped by environmental shifts, geographic dispersal, and adaptations to prey availability. Fossil evidence, spanning over a million years, underscores their origins, range expansions, and eventual divergence into various subspecies, including modern lions. This study provides a comparative analysis of lion species, with a focus on the extinct <em>Panthera leo sinhaleyus</em>, through an examination of dental morphological traits — specifically crown height and crown breadth. <em>Panthera leo sinhaleyus</em>, discovered in 1938 at Kuruvita, in the Rathnapura district, Sri Lanka, is known from the holotype specimen (i.e., a left lower carnassial). This specimen was found in association with extinct fauna assigned to the Late Pleistocene. Since its discovery, there has been limited research addressing its chronological and taxonomic range in relation to contemporary lion species, from around Asia, Africa and Europe. Our statistical analyses reveal that <em>Panthera leo sinhaleyus</em> exhibits distinct intermediate dental characteristics. Its crown height (29<!--> <!-->mm) surpasses that of the modern <em>Panthera leo</em> (26.9<!--> <!-->mm on average) but remains smaller than that of the Middle Pleistocene lion <em>Panthera spelaea</em> (32.36<!--> <!-->mm). Similarly, its crown breadth (14.5<!--> <!-->mm) is broader than many subspecies of <em>Panthera leo</em> yet narrower than <em>Panthera spelaea</em> (18.19<!--> <!-->mm). These findings suggest that <em>Panthera leo sinhaleyus</em> exhibits adaptations potentially reflective of its environment in Pleistocene Sri Lanka, indicating a distinct ecological niche and evolutionary trajectory. This study underscores the need for further investigation into the chronological and taxonomic placement of <em>Panthera leo sinhaleyus</em>, contributing to a broader understanding of morphological diversity and evolutionary pathways among prehistoric lion species.</div></div>","PeriodicalId":50780,"journal":{"name":"Annales de Paleontologie","volume":"111 3","pages":"Article 102872"},"PeriodicalIF":0.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Barremian pyritic ammonites from the western External Rif (northwest Morocco)","authors":"Mohamed Benzaggagh","doi":"10.1016/j.annpal.2025.102757","DOIUrl":"10.1016/j.annpal.2025.102757","url":null,"abstract":"<div><div>In the External Rif, northwest Morocco, the Barremian Stage is represented by a thick (200<!--> <!-->m) marl and marly limestone series. This series, particularly in the western part of the External Rif, is locally rich in pyritic ammonites. Four Barremian outcrops (Malha, Jebel Meguedrouz, Jebel Bourhzine, and Mrejet), located between Mjara and Mrejet have been studied. Collected ammonites (931 specimens) from the four outcrops allow the identification of 38 species, characterizing the Hauterivian and the lowermost Barremian, at the Mrejet section; the uppermost lower Barremian, at Mrejet and Bourhzine sections, and the upper Barremian, at Mrejet and Malha sections. These species are described and illustrated for the first time from the External Rif. Most of them are reported for the first time from the studied area. They are common to several Lower Cretaceous basins of the southern and northern margins of the Tethys, mainly NE Algeria, SE Spain, SE France, Italy, eastern Serbia, Hungary, Slovakia, and Romania. Stratigraphic and paleogeographic distributions of each species are discussed.</div></div>","PeriodicalId":50780,"journal":{"name":"Annales de Paleontologie","volume":"111 2","pages":"Article 102757"},"PeriodicalIF":1.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143759974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Les empreintes de dinosaures du Jurassique inférieur de Peyre (Aveyron, France) : fouille récente et nouvelles données ichnologiques révélées par imagerie 3D","authors":"Jean-David Moreau ,&nbsp;Jacques Sciau ,&nbsp;Ethan Jean","doi":"10.1016/j.annpal.2025.102868","DOIUrl":"10.1016/j.annpal.2025.102868","url":null,"abstract":"<div><div>At the end of the 20th century, dinosaur footprints were discovered at Peyre, in Aveyron (Causses Basin, southern France). At that time, the tracksite was limited to a single fossiliferous surface bearing a dozen of Lower Jurassic footprints. Recent excavations (2022–2024), led along a 23<!--> <!-->m thick stratigraphic section revealed six additional track-bearing surfaces. Dinosaur tracksites showing such a high density of track-bearing surfaces along such a short section are uncommon in the fossil record and extremely rare in the Causses Basin. Today, the tracksite displays 126 footprints some of which reach 49<!--> <!-->cm in length. Tracks are preserved <em>in situ</em> as concave epireliefs on the surface of dolomitic beds. Some footprints are well-preserved, showing details of digit, pad and claw marks. The excavation and 3D modelling by photogrammetry revealed several morphologies of tridactyl footprints. Biometric analyses combined with photogrammetric imaging indicated the co-occurrence of three ichnotaxa: <em>Eubrontes giganteus</em>, <em>Grallator variabilis</em> and <em>Kayentapus</em> isp. The high density of footprints unidirectionally oriented suggests repeated passages of theropods whose migrations were restricted by local physical barriers (coastlines, topography). Tracks are preserved in dolomite with cryptalgal laminites, mud cracks and ripple marks. The depositional environment is interpreted as a tidal flat periodically flooded then emerged.</div></div>","PeriodicalId":50780,"journal":{"name":"Annales de Paleontologie","volume":"111 2","pages":"Article 102868"},"PeriodicalIF":1.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}